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过氧体功能抑制减轻TMJOA软骨退化

R Ren¹, L Xiao², H Qi¹

¹State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.

Journal of dental research

|October 18, 2025

概括

过氧体和棕酸通过激活JNK/c-JUN/S100a4通路,促进关节骨关节炎 (TMJOA),为这种退行性关节疾病提供新的治疗点.

科学领域:

生物化学生物化学
分子生物学分子生物学
病理学病理学病理学

背景情况:

关节骨关节炎 (TMJOA) 是一种退行性关节疾病,其病因不明.
细胞中的脂质代谢障碍,涉及过氧体,与TMJOA的发展有关.
目前的TMJOA治疗方法不足以恢复关节结构.

研究的目的:

为了研究超氧化体在TMJOA病变发生中的作用.
阐明TMJOA中氧体,脂质代谢和软骨降解之间的分子机制.
为了确定TMJOA的潜在治疗点.

主要方法:

使用单边前部交叉咬伤手术建立了一个TMJOA小鼠模型.
在体外使用状细胞培养物和条件淘汰的小鼠 (Acan-CreER-T2Pex2) 抑制过氧体功能.
进行了多组学分析,CUT&RUN qPCR和双化酶记者测试,以确定分子通路和相互作用.

主要成果:

在TMJOA小鼠模型中观察到异常的过氧体数量和功能.
抑制过氧体功能缓解了类似OA的损伤,并降低了棕酸 (PA) 水平.
暴露于PA诱导了类似OA的表型,激活了JNK/c-JUN信号轴,导致S100a4表达增加和随后的MMP13上调,促进TMJOA.

结论:

这项研究是第一个证明过氧体在TMJOA中的关键作用的研究.
过氧体/PA/JNK/c-JUN/S100a4轴被确定为TMJOA软骨退化的关键途径.
这一途径代表了TMJOA的新和有前途的治疗标.

关键词:

在JNK中,JNK就是JNK.PEX2 PEX2 的使用情况在WNT中使用WNT.冠状腺细胞冠状腺细胞脂质脂质是什么意思脂质脂质是什么意思棕酸是一种棕酸.

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